Radiation Protection in Copolymers of isobutylene and Styrene
The effect of ionizing radiations on copolymers of isobutylene and styrene has been studied. Molecules consisting only of isobutylene units degrade under radiation, whereas styrene polymer cross-links. In the copolymer the styrene units offer protection against radiation to the neighbouring isobutyl...
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| Veröffentlicht in: | Proc. Roy. Soc. (London) 1955-06, Vol.230 (1180), p.136-145 |
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| container_title | Proc. Roy. Soc. (London) |
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| creator | Alexander, P. Charlesby, A. |
| description | The effect of ionizing radiations on copolymers of isobutylene and styrene has been studied. Molecules consisting only of isobutylene units degrade under radiation, whereas styrene polymer cross-links. In the copolymer the styrene units offer protection against radiation to the neighbouring isobutylene units. An estimate is given for the extent of this protection. On irradiation the copolymer at first degrades to an extent which depends on the percentage of styrene, then it cross-links partially into a gel. Even for copolymers containing 80 % of styrene, protection is only partial, and after high radiation doses specimens separate into a gel and a sol fraction. It is not possible to cross-link such copolymers sufficiently to produce a completely insoluble material. Chemical analysis of the irradiated copolymer shows that the separate units are distributed approximately at random throughout the material, and do not occur in large blocks rich in styrene or isobutylene. |
| doi_str_mv | 10.1098/rspa.1955.0117 |
| format | Article |
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Molecules consisting only of isobutylene units degrade under radiation, whereas styrene polymer cross-links. In the copolymer the styrene units offer protection against radiation to the neighbouring isobutylene units. An estimate is given for the extent of this protection. On irradiation the copolymer at first degrades to an extent which depends on the percentage of styrene, then it cross-links partially into a gel. Even for copolymers containing 80 % of styrene, protection is only partial, and after high radiation doses specimens separate into a gel and a sol fraction. It is not possible to cross-link such copolymers sufficiently to produce a completely insoluble material. Chemical analysis of the irradiated copolymer shows that the separate units are distributed approximately at random throughout the material, and do not occur in large blocks rich in styrene or isobutylene.</description><identifier>ISSN: 1364-5021</identifier><identifier>ISSN: 0080-4630</identifier><identifier>EISSN: 1471-2946</identifier><identifier>EISSN: 2053-9169</identifier><identifier>DOI: 10.1098/rspa.1955.0117</identifier><language>eng</language><publisher>London: The Royal Society</publisher><subject>BUTYL RADICALS ; BUTYLENE ; CHEMISTRY ; COLLOIDS ; Copolymers ; CROSS-LINKING ; DECOMPOSITION ; Gels ; IONIZATION ; IRRADIATION ; Isobutylene ; MEASURED VALUES ; Molecular weight ; Molecules ; POLYMERIZATION ; POLYMERS ; QUALITATIVE ANALYSIS ; RADIATION CHEMISTRY ; Radiation dosage ; RADIATION DOSES ; RADIATION EFFECTS ; RADIATION PROTECTION ; SOLUBILITY ; STYRENE ; Styrenes ; Viscosity</subject><ispartof>Proc. Roy. Soc. (London), 1955-06, Vol.230 (1180), p.136-145</ispartof><rights>Scanned images copyright © 2017, Royal Society</rights><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/99788$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/99788$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>314,776,780,799,828,881,27903,27904,57995,57999,58228,58232</link.rule.ids><backlink>$$Uhttps://www.osti.gov/biblio/4373949$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Alexander, P.</creatorcontrib><creatorcontrib>Charlesby, A.</creatorcontrib><creatorcontrib>Atomic Energy Research Establishment, Harwell, Berks, England</creatorcontrib><creatorcontrib>Royal Cancer Hospital, London</creatorcontrib><title>Radiation Protection in Copolymers of isobutylene and Styrene</title><title>Proc. Roy. Soc. (London)</title><addtitle>Proc. R. Soc. Lond. A</addtitle><addtitle>Proc. R. Soc. Lond. A</addtitle><description>The effect of ionizing radiations on copolymers of isobutylene and styrene has been studied. Molecules consisting only of isobutylene units degrade under radiation, whereas styrene polymer cross-links. In the copolymer the styrene units offer protection against radiation to the neighbouring isobutylene units. An estimate is given for the extent of this protection. On irradiation the copolymer at first degrades to an extent which depends on the percentage of styrene, then it cross-links partially into a gel. Even for copolymers containing 80 % of styrene, protection is only partial, and after high radiation doses specimens separate into a gel and a sol fraction. It is not possible to cross-link such copolymers sufficiently to produce a completely insoluble material. Chemical analysis of the irradiated copolymer shows that the separate units are distributed approximately at random throughout the material, and do not occur in large blocks rich in styrene or isobutylene.</description><subject>BUTYL RADICALS</subject><subject>BUTYLENE</subject><subject>CHEMISTRY</subject><subject>COLLOIDS</subject><subject>Copolymers</subject><subject>CROSS-LINKING</subject><subject>DECOMPOSITION</subject><subject>Gels</subject><subject>IONIZATION</subject><subject>IRRADIATION</subject><subject>Isobutylene</subject><subject>MEASURED VALUES</subject><subject>Molecular weight</subject><subject>Molecules</subject><subject>POLYMERIZATION</subject><subject>POLYMERS</subject><subject>QUALITATIVE ANALYSIS</subject><subject>RADIATION CHEMISTRY</subject><subject>Radiation dosage</subject><subject>RADIATION DOSES</subject><subject>RADIATION EFFECTS</subject><subject>RADIATION PROTECTION</subject><subject>SOLUBILITY</subject><subject>STYRENE</subject><subject>Styrenes</subject><subject>Viscosity</subject><issn>1364-5021</issn><issn>0080-4630</issn><issn>1471-2946</issn><issn>2053-9169</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1955</creationdate><recordtype>article</recordtype><recordid>eNp9UsFu1DAQjRBIlMKVA6eIe7ae2I7tA0LVCihqJaq2wHHkJA7rJY0j2wukX4-TIKSC1JNnPG_evHl2lr0EsgGi5IkPo96A4nxDAMSj7AiYgKJUrHqcYlqxgpMSnmbPQtgTQhSX4ih7c6Vbq6N1Q37pXTTNEtoh37rR9dOt8SF3XW6Dqw9x6s1gcj20-XWcfIqfZ0863Qfz4s95nH1-_-5me1ZcfPrwcXt6UewYqFhw05JO6rphhFYVrVXLW9ooQoRWhkPbmZpJIRiteKWBV01FtOSiKuuOlZoJepy9XnldiBZDY5PQXeOGIelFRgVVTCVQWEHeTUmMa6yJE-7dwQ8pxavry1NQVP4oKbEAkiCRFIhgCjje2RFn_2YAJgDaEA4GF9h8j7OvOPv6T5qm0oemAsH5cf7verV27UN0Hkdvb7WfUCkhZSoWa9GGaH79LWr_HStBBccvkiFT5-Lm6xngecK_XfE7-23303qD97Qso5NZ0Qxx2W3ZKn0I7A59j2PbJQZ4kMFNow_6XjP9DWFzwJg</recordid><startdate>19550612</startdate><enddate>19550612</enddate><creator>Alexander, P.</creator><creator>Charlesby, A.</creator><general>The Royal Society</general><scope>BSCLL</scope><scope>OTOTI</scope></search><sort><creationdate>19550612</creationdate><title>Radiation Protection in Copolymers of isobutylene and Styrene</title><author>Alexander, P. ; Charlesby, A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-h419t-5ed0f8abc403663b9d5d3c9007a9e51dfeb487743656a156c60a85762bf42a473</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1955</creationdate><topic>BUTYL RADICALS</topic><topic>BUTYLENE</topic><topic>CHEMISTRY</topic><topic>COLLOIDS</topic><topic>Copolymers</topic><topic>CROSS-LINKING</topic><topic>DECOMPOSITION</topic><topic>Gels</topic><topic>IONIZATION</topic><topic>IRRADIATION</topic><topic>Isobutylene</topic><topic>MEASURED VALUES</topic><topic>Molecular weight</topic><topic>Molecules</topic><topic>POLYMERIZATION</topic><topic>POLYMERS</topic><topic>QUALITATIVE ANALYSIS</topic><topic>RADIATION CHEMISTRY</topic><topic>Radiation dosage</topic><topic>RADIATION DOSES</topic><topic>RADIATION EFFECTS</topic><topic>RADIATION PROTECTION</topic><topic>SOLUBILITY</topic><topic>STYRENE</topic><topic>Styrenes</topic><topic>Viscosity</topic><toplevel>online_resources</toplevel><creatorcontrib>Alexander, P.</creatorcontrib><creatorcontrib>Charlesby, A.</creatorcontrib><creatorcontrib>Atomic Energy Research Establishment, Harwell, Berks, England</creatorcontrib><creatorcontrib>Royal Cancer Hospital, London</creatorcontrib><collection>Istex</collection><collection>OSTI.GOV</collection><jtitle>Proc. Roy. Soc. (London)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Alexander, P.</au><au>Charlesby, A.</au><aucorp>Atomic Energy Research Establishment, Harwell, Berks, England</aucorp><aucorp>Royal Cancer Hospital, London</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Radiation Protection in Copolymers of isobutylene and Styrene</atitle><jtitle>Proc. Roy. Soc. (London)</jtitle><stitle>Proc. R. Soc. Lond. A</stitle><addtitle>Proc. R. Soc. Lond. A</addtitle><date>1955-06-12</date><risdate>1955</risdate><volume>230</volume><issue>1180</issue><spage>136</spage><epage>145</epage><pages>136-145</pages><issn>1364-5021</issn><issn>0080-4630</issn><eissn>1471-2946</eissn><eissn>2053-9169</eissn><abstract>The effect of ionizing radiations on copolymers of isobutylene and styrene has been studied. Molecules consisting only of isobutylene units degrade under radiation, whereas styrene polymer cross-links. In the copolymer the styrene units offer protection against radiation to the neighbouring isobutylene units. An estimate is given for the extent of this protection. On irradiation the copolymer at first degrades to an extent which depends on the percentage of styrene, then it cross-links partially into a gel. Even for copolymers containing 80 % of styrene, protection is only partial, and after high radiation doses specimens separate into a gel and a sol fraction. It is not possible to cross-link such copolymers sufficiently to produce a completely insoluble material. Chemical analysis of the irradiated copolymer shows that the separate units are distributed approximately at random throughout the material, and do not occur in large blocks rich in styrene or isobutylene.</abstract><cop>London</cop><pub>The Royal Society</pub><doi>10.1098/rspa.1955.0117</doi><tpages>10</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1364-5021 |
| ispartof | Proc. Roy. Soc. (London), 1955-06, Vol.230 (1180), p.136-145 |
| issn | 1364-5021 0080-4630 1471-2946 2053-9169 |
| language | eng |
| recordid | cdi_istex_primary_ark_67375_V84_49K7TWH1_K |
| source | JSTOR Mathematics & Statistics; Jstor Complete Legacy |
| subjects | BUTYL RADICALS BUTYLENE CHEMISTRY COLLOIDS Copolymers CROSS-LINKING DECOMPOSITION Gels IONIZATION IRRADIATION Isobutylene MEASURED VALUES Molecular weight Molecules POLYMERIZATION POLYMERS QUALITATIVE ANALYSIS RADIATION CHEMISTRY Radiation dosage RADIATION DOSES RADIATION EFFECTS RADIATION PROTECTION SOLUBILITY STYRENE Styrenes Viscosity |
| title | Radiation Protection in Copolymers of isobutylene and Styrene |
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